At the Marin County Free Library, it's as clear as the Kindles in people's hands what Santa brought to town.
Since the holidays, librarians have fielded a surge in questions from people eager to learn how to check out electronic books to their newfangled Nooks, iPads and especially the popular Kindles.
In Marin, the consortium of eight libraries that includes the Free Library saw the number of e-book check-outs bound from 1,623 in September to 4,082 in December, a 150 percent jump.
But no such flurry occurred in Sonoma County. The library system belongs to an increasingly small minority of public libraries that doesn't offer e-books, a service that's become standard at libraries across the country.
"We know people really, really want it and we are concerned because we are falling behind what other libraries are doing already," said Sandy Cooper, the library's director. "But if we are buying e-books then we are buying less of something else."
The challenge isn't so different from the one facing producers of content from newspapers to book publishers to movie makers - how to meet the yawning public appetite for online media and still sustain their old way of doing business.
Indeed it's a tough time for the library to expand offerings. All 13 branches of the Sonoma County Library closed from Dec. 23 to Jan. 2 to save payroll costs, the latest in a litany of cuts to balance its budget.
But Cooper said the library can't ignore the constant emails, Facebook posts and face-to-face inquiries inquiring about e-book availability.
The library has earmarked $15,000 for e-books and is looking for $10,000 more, enough to provide a starting selection of 1,000 e-books to complement its collection of nearly 650,000 books, 26,000 audio books and 26,000 videos.
E-books cost libraries roughly $20 to $30, a similar price to hardcovers.